CN101518941A - Equipment and method for producing polystyrene extruded plastic foam insulated pipes - Google Patents
Equipment and method for producing polystyrene extruded plastic foam insulated pipes Download PDFInfo
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- CN101518941A CN101518941A CN200910029848A CN200910029848A CN101518941A CN 101518941 A CN101518941 A CN 101518941A CN 200910029848 A CN200910029848 A CN 200910029848A CN 200910029848 A CN200910029848 A CN 200910029848A CN 101518941 A CN101518941 A CN 101518941A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/362—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using static mixing devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/565—Screws having projections other than the thread, e.g. pins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/918—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
- B29C48/9185—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling in the direction of the stream of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92209—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92361—Extrusion unit
- B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/924—Barrel or housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
Abstract
The invention relates to equipment and a method for producing polystyrene extruded plastic foam insulated pipes, and belongs to the technical field of polystyrene plastic extrusion foam production. The production equipment consists of a material loading part, a foaming agent filling part, a first single screw extrusion machine, a second single screw extrusion machine, a static mixer, a die head, an extrusion die, a shaping sleeve, and a double-roll tractor. Polystyrene raw material enters the extrusion machine from the material loading part; the foaming agent filling part comprises a foaming agent tank and a metering pump, and the foaming agent is filled by the metering pump; the first single screw extrusion machine and the second single screw extrusion machine are sequentially and serially connected to form an extrusion machine for producing the polystyrene extruded plastic foam insulated pipes; and meanwhile, the barrels of the first single screw extrusion machine and the second single screw extrusion machine are divided into 13 temperature control regions, and an electric heating plate and a temperature sensor are arranged in each temperature control region, wherein the barrel I of the first single screw extrusion machine is divided into 7 temperature control regions and the barrel II of the second single screw extrusion machine is divided into 6 temperature control regions.
Description
Technical field
The present invention relates to a kind of polystyrene extruded plastic foam insulated pipes production equipment and production method thereof, belong to polystyrene plastics extrusion foaming production technical field, being mainly used in medium temperature is the insulating tube production of following tracheae, water pipe and petroleum transportation pipeline of 70 degree.
Background technology
Prior art generally adopts polyurethane foam plastics to be used as pipe insulation, its production method usually adopts and discontinuously extrudes, composite foamed, single-piece production technology, cause that its production efficiency is low, compression strength is lower and price is higher relatively, thereby make the cost of polyurethane foam insulating tube higher, and complex manufacturing.
Summary of the invention
The present invention seeks in order to overcome above-mentioned weak point, a kind of polystyrene extruded plastic foam insulated pipes production equipment and production method thereof are a kind of adopt a single screw extrusion machine to connect production equipment and production methods thereof that the continuous extrusion foaming of another single screw extrusion machine produces polystyrene extruded plastic foam insulated pipes.The extruded plastic foam insulated pipes that this production equipment and production method thereof are produced can overcome the discontinuous problem lower with production efficiency of extruding, and enhances productivity, and reduces production costs, and manufactures simple and convenient.
Polystyrene extruded plastic foam insulated pipes production equipment and production method thereof take following scheme to realize:
The polystyrene extruded plastic foam insulated pipes production equipment is made up of material loading part, blowing agent injection part, No. 1 single screw extrusion machine, No. 2 single screw extrusion machines, static mixer, die head, extrusion die, typing cover and two roller hauling machines.Material loading part is made up of spice machine and feeder, and the spice machine is commercially available vane type spice machine, and feeder adopts commercially available spiral feeder, and spice machine and the feeder of polystyrene raw material by material loading part enters in No. 1 single screw extrusion machine; Blowing agent injects part and comprises blowing agent basin and measuring pump, and the blowing agent decanting point is positioned at the middle-end of No. 1 single screw extrusion machine, and blowing agent injects by measuring pump; No. 1 single screw extrusion machine and No. 2 single screw extrusion machines are composed in series the extruder of producing polystyrene extruded plastic foam insulated pipes successively, the machine barrel of No. 1 single screw extrusion machine and No. 2 single screw extrusion machines is divided into 13 temperature controlled region simultaneously, each temperature controlled region is equipped with electric boiling plate and temperature sensor, electric boiling plate is the cast aluminium heating plate, temperature sensor is the Type B thermocouple, wherein the machine barrel I of No. 1 single screw extrusion machine is divided into 7 temperature controlled region, the machine barrel II of No. 2 single screw extrusion machines is divided into 6 temperature controlled region, the temperature control that the machine barrel of 13 temperature controlled region requires in order to the different process of realizing each district.
The machine barrel II of No. 2 single screw extrusion machines is equipped with cooling jacket outward.No. 2 the single screw extrusion machine front end is equipped with static mixer, and the static mixer front end is equipped with extrusion die, and the extrusion die front end is equipped with typing cover and two roller hauling machine.
Polystyrene raw material is through the automatic charging part, add in the drying hopper of polystyrene extruder, polystyrene raw material is constantly sheared by No. 1 single screw extrusion machine, the plasticizing of heating is fed forward, when the polystyrene of molten condition is delivered to the blowing agent inlet of No. 1 single screw extrusion machine, blowing agent mixes with polystyrene, then with the abundant mixing of the mixture under the molten condition through No. 2 single screw extrusion machines, cooling and extruding, through the static mixer static mixing, clamp-on the insulating tube extrusion die at last, by the typing of typing cover, can obtain polystyrene extruded plastic foam insulated pipes by two rod hauling machine tractions.
The production method of polystyrene extruded plastic foam insulated pipes production equipment of the present invention is as follows: at first with No. 1 single screw extrusion machine and 13 temperature controlled region of No. 2 single screw extrusion machines according to the technological requirement preheating, preheating 2～3 hours, when temperature reaches setting value, be incubated half an hour; The temperature of 1-13 temperature controlled region sets value respectively and is: 170 ℃, 190 ℃, 195 ℃, 195 ℃, 195 ℃, 195 ℃, 200 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃ and 180 ℃;
When barrel zone temperature reaches above-mentioned preheat temperature, start the spice machine, the granules of polystyrene raw material is added No. 1 single screw extrusion machine hopper, give the single screw extrusion machine material loading; Start, start No. 2 single screw extrusion machines earlier, treat to start after five minutes No. 1 single screw extrusion machine, open measuring pump then, blowing agent is in measuring pump is injected into No. 1 single screw extrusion machine, close each section temperature controlled region power supply of No. 2 single screw extrusion machines this moment, begins to walk machine, and purpose is that the dead material in the extruder is extruded fully.Open the cooling jacket of No. 2 single screw extrusion machines then, No. 2 single screw extrusion machine 8-13 district barrel zone temperature is reduced to 150 ℃, 135 ℃, 110 ℃, 100 ℃, 80 ℃ and 50 ℃ respectively.
When the pressure for the treatment of No. 1 single screw extrusion machine and No. 2 single screw extrusion machine junctions reaches 10-12MPa, the thickness mixture plastics of fusion are through the die cavity of extruding that fully is mixed into extrusion die of static mixer, material is extruded through the extrusion die outlet then, follow the instantaneous expansion of blowing agent simultaneously and foam, the cooling and shaping that overlaps through finalizing the design can be extruded and obtain all very smooth smooth polystyrene extruded plastic foam insulated pipes of surfaces externally and internally, can obtain polystyrene extruded plastic foam insulated pipes by two rod hauling machines tractions, cut-out.
Described granules of polystyrene and blowing agent weight proportion are 100:4～15.
Described blowing agent is selected commercially available carbon dioxide combined foaming agent or freon blowing agent for use.
Polystyrene extruded plastic foam insulated pipes production equipment of the present invention and production method thereof, adopt No. 2 single screw extrusion machines of No. 1 single screw extrusion machine series connection, extrusion foaming is produced polystyrene extrusion foaming insulating tube continuously, improved production efficiency greatly, reduced production cost, and pipe has good thermal and insulating performance, and the thermal conductivity number is less than 0.03W/ (MK); Good pressure resistance can reach 250kPa.
Description of drawings
The present invention is further illustrated below with reference to accompanying drawing.
Fig. 1 is a polystyrene extruded plastic foam insulated pipes production equipment schematic diagram.
Fig. 2 is the production method FB(flow block) of polystyrene extruded plastic foam insulated pipes production equipment.
Among the figure: 1, No. 1 single screw extrusion machine, 2, hopper, 3, No. 1 machine list screw rod, 4, the blowing agent inlet, 5, No. 1 motor, 6, No. 2 single screw extrusion machines, 7, No. 2 motors, 8, No. 2 machine list screw rods, 9, static mixer, 10, extrusion die, 11, the typing cover, 12, die head, 13, the temperature control of 1 district, 14, the temperature control of 2 districts, 15, the temperature control of 3 districts, 16, the temperature control of 4 districts, 17, the temperature control of 5 districts, 18, the temperature control of 6 districts, the temperature control of 19,7 districts, the temperature control of 20,8 districts, 21, the temperature control of 9 districts, 22, the temperature control of 10 districts, 23, the temperature control of 11 districts, 24, the temperature control of 12 districts, 25, the temperature control of 13 districts, 26, two rod hauling machines, 27, polystyrene extruded plastic foam (XPS) insulating tube, 28, machine barrel I, 29, belt I, 30, belt pulley I, 31, frame I, 32, belt pulley II, 33, belt II, 34, frame II, 35, cooling jacket, 36, machine barrel II.
The specific embodiment
With reference to accompanying drawing 1,2, the polystyrene extruded plastic foam insulated pipes production equipment injects part, 1, No. 2 single screw extrusion machines 6 of No. 1 single screw extrusion machine and two roller hauling machine 26 by material loading part, blowing agent and forms.Material loading part is made up of spice machine and feeder, and the spice machine is commercially available vane type spice machine, and feeder adopts commercially available spiral feeder, in the hopper 2 that the spice machine and the feeder of polystyrene raw material by material loading part enters No. 1 single screw extrusion machine 1; Blowing agent injects part and comprises blowing agent basin and measuring pump, blowing agent is selected carbon dioxide mix blowing agent or freon blowing agent for use, the blowing agent decanting point is positioned at the middle-end of No. 1 single screw extrusion machine 1, and blowing agent injects by measuring pump, and measuring pump adopts commercially available measuring pump; No. 1 single screw extrusion machine 1 and No. 2 single screw extrusion machines 6 are composed in series the extruder of producing polystyrene extruded plastic foam insulated pipes successively, the machine barrel of No. 1 single screw extrusion machine 1 and No. 2 single screw extrusion machines 6 is divided into 13 temperature controlled region simultaneously, each temperature controlled region is equipped with electric boiling plate and temperature sensor, electric boiling plate is the cast aluminium heating plate, temperature sensor is the Type B thermocouple, wherein No. 1 single screw extrusion machine is divided into 7 temperature controlled region, No. 2 single screw extrusion machine is divided into 6 temperature controlled region, the temperature control that the machine barrel of 13 temperature controlled region requires in order to the different process of realizing each district.
The machine barrel II36 of No. 2 single screw extrusion machines is equipped with cooling jacket 35 outward.No. 2 single screw extrusion machine 6 front ends are equipped with static mixer 9, and static mixer 9 front ends are equipped with extrusion die 10, and extrusion die 10 front ends are equipped with typing cover 11 and two roller hauling machine 26.Two roller hauling machines 26 are by motor 12 transmissions.
Described No. 1 single screw extrusion machine comprises frame I31, No. 1 motor 5, driving belt I29, belt pulley I30, hopper 2, machine barrel I28, No. 1 machine list screw rod 3 and 1-7 temperature controlled region.Machine barrel I28 is contained on the frame I31,3, No. 1 motors 5 of No. 1 machine list screw rod is housed in the machine barrel I28 is contained in frame I31 bottom, and No. 1 motor 5 is by belt pulley I30, No. 1 machine list of driving belt I29 transmission screw rod 3.Machine barrel I28 is divided into the 1-7 temperature controlled region, and the 1-7 temperature controlled region is respectively 1 district temperature control, 13,2 district's temperature control 14,3 districts temperature controls, 15,4 district's temperature controls, 16,5 district's temperature controls, 17,6 district's temperature controls, 18,7 district's temperature controls 19.
Described No. 2 single screw extrusion machines comprise frame II34, No. 2 motors 7, driving belt II33, belt pulley II32,8-13 temperature controlled region, machine barrel II36, No. 2 machine list screw rods 8, cooling jacket 35.Machine barrel II36 is contained on the frame II34,8, No. 2 motors 7 of No. 2 machine list screw rods is housed in the machine barrel II36 is contained in frame II34 bottom, and No. 2 motors 7 are by belt pulley II32, No. 2 machine lists of driving belt II33 transmission screw rod 8.Machine barrel II36 is divided into the 8-13 temperature controlled region, and the 8-13 temperature controlled region is respectively 8 districts temperature control, 20,9 district's temperature controls, 21,10 district's temperature controls, 22,11 district's temperature controls, 23,12 district's temperature controls, 24,13 district's temperature controls 25.
The polystyrene extruded plastic foam insulated pipes production method specific embodiment is: will carry out preheating to extruder earlier before the start, 8 districts of 1 district of No. 1 single screw extrusion machine 1～7 district's machine barrels and No. 2 single screw extrusion machines 6～13 district's barrel zone temperatures are set to the technological requirement temperature respectively, preheating 2～3 hours, when temperature reaches setting value, be incubated half an hour; The temperature of 1-13 temperature controlled region sets value respectively and is: 170 ℃, 190 ℃, 195 ℃, 195 ℃, 195 ℃, 195 ℃, 200 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃ and 180 ℃;
| 1 |
2 districts | 3 districts | 4 |
5 |
6 |
7 districts |
| 170 | 190 | 195 | 195 | 195 | 195 | 200 |
| 8 |
9 |
10 |
11 |
12 districts | 13 districts |
| 180 | 180 | 180 | 180 | 180 | 180 |
When barrel zone temperature reaches above-mentioned preheat temperature, start the spice machine, with the hopper 2 of No. 1 single screw extrusion machine of granules of polystyrene raw material adding, give the single screw extrusion machine material loading; The start low frequency starts No. 2 motors 7, treat its current stabilization after, No. 1 motor 5 of low-frequency start is noted the variation of No. 1 motor 5 electric currents, opens measuring pump then, blowing agent injects in No. 1 single screw extrusion machine 1 automatically.Granules of polystyrene and blowing agent weight proportion are 100:4～15.Blowing agent is selected commercially available carbon dioxide combined foaming agent or freon blowing agent for use, lifting along with two machine rotating speeds, increase the injection rate of blowing agent simultaneously, wait that the material that contains blowing agent flows out from the extrusion die outlet, turn off 8 districts～13 district's heater switch of No. 2 single screw extrusion machines 6 this moment, begin to walk machine, purpose is that the dead material in the extruder is extruded fully.The machine barrel II36 that opens No. 2 single screw extrusion machines 6 is equipped with cooling jacket outward, opens water pump, waits for that the 8-13 district barrel zone temperature of No. 2 single screw extrusion machines 6 is reduced to 150 ℃, 135 ℃, 110 ℃, 100 ℃, 80 ℃ and 50 ℃ respectively.
| 8 |
9 |
10 |
11 |
12 districts | 13 districts |
| 150 | 135 | 110 | 100 | 80 | 50 |
The pressure for the treatment of whole system is according to the stable foundation of technological requirement, when the pressure for the treatment of No. 1 single screw extrusion machine 1 and No. 2 single screw extrusion machine 6 junctions reaches 10-12MPa, the thickness mixture plastics of fusion are through the die cavity of extruding that fully is mixed into extrusion die 10 of static mixer 9, material is extruded through extrusion die 10 outlets then, follow the instantaneous expansion of blowing agent simultaneously and foam, can extrude through the cooling and shaping of typing cover 11 then and obtain all very smooth smooth polystyrene extruded plastic foam insulated pipes of surfaces externally and internally, by two rod hauling machine 26 tractions, cut-out can obtain polystyrene extruded plastic foam insulated pipes 27.
Described granules of polystyrene and blowing agent weight proportion are 100:4～15.
Described blowing agent is selected commercially available carbon dioxide combined foaming agent or freon blowing agent for use.
Claims (8)
1, a kind of polystyrene extruded plastic foam insulated pipes production equipment is characterized in that being made up of material loading part, blowing agent injection part, No. 1 single screw extrusion machine, No. 2 single screw extrusion machines, static mixer, die head, extrusion die, typing cover and two roller hauling machines; Material loading part is made up of spice machine and feeder, and polystyrene raw material enters in the extruder by the spice machine and the feeder of material loading part; Blowing agent injects part and comprises blowing agent basin and measuring pump, and the blowing agent decanting point is positioned at the middle-end of No. 1 single screw extrusion machine, and blowing agent injects by measuring pump; No. 1 single screw extrusion machine and No. 2 single screw extrusion machines are composed in series the extruder of producing polystyrene extruded plastic foam insulated pipes successively, the machine barrel of No. 1 single screw extrusion machine and No. 2 single screw extrusion machines is divided into 13 temperature controlled region simultaneously, each temperature controlled region is equipped with electric boiling plate and temperature sensor, wherein the machine barrel I of No. 1 single screw extrusion machine is divided into 7 temperature controlled region, the machine barrel II of No. 2 single screw extrusion machines is divided into 6 temperature controlled region, the temperature control that the machine barrel of 13 temperature controlled region requires in order to the different process of realizing each district;
The machine barrel II of No. 2 single screw extrusion machines is equipped with cooling jacket outward, and No. 2 the single screw extrusion machine front end is equipped with static mixer, and the static mixer front end is equipped with die head, and extrusion die is housed on the die head, and the extrusion die front end is equipped with typing cover and two roller hauling machine.
2, polystyrene extruded plastic foam insulated pipes production equipment according to claim 1 is characterized in that described electric boiling plate is the cast aluminium heating plate, and temperature sensor is the Type B thermocouple.
3, polystyrene extruded plastic foam insulated pipes production equipment according to claim 1 is characterized in that described No. 1 single screw extrusion machine comprises frame I, No. 1 motor, driving belt I, belt pulley I, hopper, machine barrel I, No. 1 machine list screw rod and 1-7 temperature controlled region; Machine barrel I is contained on the frame I, and machine list screw rod is housed in the machine barrel I No. 1, and No. 1 motor is contained in frame I bottom, and No. 1 motor is by belt pulley I, No. 1 machine list of driving belt I transmission screw rod.
4, according to claim 1 or 3 described polystyrene extruded plastic foam insulated pipes production equipments, it is characterized in that described machine barrel I is divided into the 1-7 temperature controlled region, the 1-7 temperature controlled region is respectively the temperature control of 1 district, the temperature control of 2 districts, the temperature control of 3 districts, the temperature control of 4 districts, the temperature control of 5 districts, the temperature control of 6 districts, the temperature control of 7 districts.
5, polystyrene extruded plastic foam insulated pipes production equipment according to claim 1, it is characterized in that described No. 2 single screw extrusion machines comprise frame II, No. 2 motors, driving belt II, belt pulley II, 8-13 temperature controlled region, machine barrel II, No. 2 machine list screw rods, cooling jacket; Machine barrel II is contained on the frame II, and machine list screw rod is housed in the machine barrel II No. 2, and No. 2 motor is contained in frame II bottom, and No. 2 motors are by belt pulley II, No. 2 machine lists of driving belt II transmission screw rod; Machine barrel II is divided into the 8-13 temperature controlled region, and the 8-13 temperature controlled region is respectively the temperature control of 8 districts, the temperature control of 9 districts, the temperature control of 10 districts, the temperature control of 11 districts, the temperature control of 12 districts, the temperature control of 13 districts.
6, polystyrene extruded plastic foam insulated pipes production equipment according to claim 1 or 5, it is characterized in that described machine barrel II is divided into the 8-13 temperature controlled region, the 8-13 temperature controlled region is respectively the temperature control of 8 districts, the temperature control of 9 districts, the temperature control of 10 districts, the temperature control of 11 districts, the temperature control of 12 districts, the temperature control of 13 districts.
7, the production method of the described polystyrene extruded plastic foam insulated pipes production equipment of claim 1 is as follows: at first with No. 1 single screw extrusion machine and 13 temperature controlled region of No. 2 single screw extrusion machines according to the technological requirement preheating, preheating 2～3 hours, when temperature reaches setting value, be incubated half an hour, the temperature of 1-13 temperature controlled region sets value respectively and is: 170 ℃, 190 ℃, 195 ℃, 195 ℃, 195 ℃, 195 ℃, 200 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃ and 180 ℃;
When barrel zone temperature reaches above-mentioned preheat temperature, start the spice machine, the granules of polystyrene raw material is added No. 1 single screw extrusion machine hopper, give the single screw extrusion machine material loading; Start, start No. 2 single screw extrusion machines earlier, treat to start after five minutes No. 1 single screw extrusion machine, open measuring pump then, blowing agent is in measuring pump is injected into No. 1 single screw extrusion machine, close each section temperature controlled region power supply of No. 2 single screw extrusion machines this moment, begins to walk machine, and purpose is that the dead material in the extruder is extruded fully; Open the cooling jacket of No. 2 single screw extrusion machines then, No. 2 single screw extrusion machine 8-13 district barrel zone temperature is reduced to 150 ℃, 135 ℃, 110 ℃, 100 ℃, 80 ℃ and 50 ℃ respectively;
When the pressure for the treatment of No. 1 single screw extrusion machine and No. 2 single screw extrusion machine junctions reaches 10-12MPa, the thickness mixture plastics of fusion are through the die cavity of extruding that fully is mixed into extrusion die of static mixer, material is extruded through the extrusion die outlet then, follow the instantaneous expansion of blowing agent simultaneously and foam, the cooling and shaping that overlaps through finalizing the design can be extruded and obtain all very smooth smooth polystyrene extruded plastic foam insulated pipes of surfaces externally and internally, can obtain polystyrene extruded plastic foam insulated pipes by two rod hauling machines tractions, cut-out.
8, the production method of polystyrene extruded plastic foam insulated pipes production equipment according to claim 7 is characterized in that described granules of polystyrene and blowing agent weight proportion are 100: 4～15.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100298486A CN101518941B (en) | 2009-03-26 | 2009-03-26 | Equipment and method for producing polystyrene extruded plastic foam insulated pipes |
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| CN2009100298486A CN101518941B (en) | 2009-03-26 | 2009-03-26 | Equipment and method for producing polystyrene extruded plastic foam insulated pipes |
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| CN101518941A true CN101518941A (en) | 2009-09-02 |
| CN101518941B CN101518941B (en) | 2012-05-23 |
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| CN102161774A (en) * | 2011-01-26 | 2011-08-24 | 南京法宁格节能科技有限公司 | Method for producing polystyrene extruded sheets by using carbon dioxide foaming agent |
| CN103101166A (en) * | 2012-12-14 | 2013-05-15 | 刘福华 | PP (propene polymer) raw material sheet material production process and device |
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| CN103273659A (en) * | 2013-06-23 | 2013-09-04 | 宁夏鼎盛阳光保温材料有限公司 | Carbon dioxide foaming type plastic extrusion plate equipment |
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| CN102161774A (en) * | 2011-01-26 | 2011-08-24 | 南京法宁格节能科技有限公司 | Method for producing polystyrene extruded sheets by using carbon dioxide foaming agent |
| CN103101166A (en) * | 2012-12-14 | 2013-05-15 | 刘福华 | PP (propene polymer) raw material sheet material production process and device |
| CN103101166B (en) * | 2012-12-14 | 2015-11-25 | 深圳市恩欣龙特种工程塑料有限公司 | A kind of PP material plate production technology and device |
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| CN103273659A (en) * | 2013-06-23 | 2013-09-04 | 宁夏鼎盛阳光保温材料有限公司 | Carbon dioxide foaming type plastic extrusion plate equipment |
| CN103273659B (en) * | 2013-06-23 | 2016-02-03 | 宁夏鼎盛阳光保温材料有限公司 | Blown with carbon dioxide plastic extrusion plate equipment |
| CN104708839A (en) * | 2013-12-12 | 2015-06-17 | 南宁市磁汇科技有限公司 | Manufacturing method and equipment for prefabricated polyethylene foamed heat-insulating pipe |
| WO2020118987A1 (en) * | 2018-12-14 | 2020-06-18 | 北京化工大学 | Foam molding apparatus used for thermoplastic polyester |
| CN110281497A (en) * | 2019-07-26 | 2019-09-27 | 佛山市高明爱博广告装饰材料有限公司 | A kind of EPS sheet production line |
| CN114536585A (en) * | 2022-03-01 | 2022-05-27 | 合肥华聚微科新材料有限责任公司 | High-rate polylactic acid physical extrusion foaming bead and preparation process thereof |
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